7019 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7019 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7019 ACD/P4ADBC is a precision duplex back-to-back angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This matched bearing set features a moderate preload (Class C) and P4A tolerance class, making it ideal for high-precision spindles and machinery. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously with high stability, providing superior performance in demanding operational environments.
7019 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Duplex Back-to-Back arrangement for high moment rigidity |
| C | Moderate preload classification |
7019 ACD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise rotational accuracy.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing delivers excellent performance under combined radial and axial loads, featuring dynamic load rating of 28,125 lbf and static load rating of 34,425 lbf.
Precision Performance: Manufactured to P4A tolerance class with precise dimensional control (bore tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for high-speed applications.
High-Speed Capability: The phenolic cage material provides excellent strength-to-weight ratio and smooth operation at limiting speeds up to 15,000 rpm.
Premium Material Construction: Made from chrome steel for both rings and balls, ensuring durability and long service life in demanding conditions.
7019 ACD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Industrial Pumps - Chemical process pumps and high-pressure applications
- High-Speed Compressors - Air compressors and gas handling equipment
- Robotic Systems - Precision joints and rotary actuators
- Medical Equipment - CT scanners and high-speed dental handpieces
- Aerospace Systems - Flight control mechanisms and auxiliary power units
